2004VDI 3862 Blatt 7-2004 Gaseous emission measurement - Measurement of aliphatic and aromatic aldehydes and ketones by the DNPH method - Impinger/carbon tetrachloride method
2002VDI 3862 Blatt 7-2002 Gaseous emission measurement - Measurement of aldehydes and ketones by the DNPH method - Impinger/tetrachlorcarbon method